PART NUMBER:48-1614
- End Window G-M Detector for Alpha Beta and Gamma
- ³He Proportional Detector with Moderator for Neutrons
- 4 Ranges
- Total Counting Range from
0 - 500,000 cpm
DETECTORS: Controlled by selector switch
NEUTRON: Model 42-14H ³He proportional detector with 3"(7.6 cm) diameter cadmium lined moderator for fast neutrons (remove detector from moderator for thermal neutrons)
ENERGY RESPONSE: Count response is not linear throughout energy spectrum (0.025 - 12 MeV)
SENSITIVITY: Typically 60 cpm/mrem/hr (AmBe fast neutrons)
GAMMA REJECTION: Less than 10 cpm at 10 R/hr
ALPHA BETA-GAMMA: Model 44-7 thin end window G-M detector (others available)
WINDOW: 1.7 plus or minus 0.3 mg/cm² mica
WINDOW AREA:
Active - 6.4 cm²
Open - 5.2 cm²
EFFICIENCY(4pi geometry): Typically 2% - 14C; 10% - 90Sr/90Y; 7% - 239Pu
SENSITIVITY: Typically 2100 cpm/mR/hr (137Cs gamma)
METER DIAL: 0 - 500 cpm, 0 - 2.5 kV, BAT TEST (others available)
MULTIPLIERS: X1, X10, X100, X1000
LINEARITY: Reading within plus or minus 10% of true value
AUDIO: Built in unimorph speaker with ON/OFF switch (greater than 60 dB at 2 feet)
CALIBRATION CONTROLS: Accessible from front of instrument (protective cover provided)
RESPONSE: Toggle switch for FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
RESET: Push-button to zero meter
POWER: 2 each "D" cell batteries (housed in sealed compartment that is externally accessible)
BATTERY LIFE: Typically 600 hours with alkaline batteries (battery condition can be checked on meter)
METER: 2.5"(6.4cm) arc, 1 mA analog type
CONSTRUCTION: Cast and drawn aluminum with beige polyurethane enamel paint
TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
SIZE: 12.5"(31.8cm)H X 3.5"(8.9cm)W X 8.5"(21.6cm)L
WEIGHT: 8 lbs(3.7 kg) including batteries
Common Meter Dial
202-356
0 -500 cpm
|
Accessories |
Replacement Parts |
|
Check Source
(Beta/Gamma Only) |
Meter Bezel |
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Page last updated: November 2006